/*
*
* * Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.com)
* *
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://www.apache.org/licenses/LICENSE-2.0
* *
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS,
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* * See the License for the specific language governing permissions and
* * limitations under the License.
* *
* * For more information: http://www.orientechnologies.com
*
*/
package com.orientechnologies.orient.core.sql.operator;
import com.orientechnologies.orient.core.command.OCommandContext;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.id.ORID;
import com.orientechnologies.orient.core.sql.filter.OSQLFilterCondition;
import java.util.regex.Pattern;
/**
* MATCHES operator. Matches the left value against the regular expression contained in the second one.
*
* @author Luca Garulli
*
*/
public class OQueryOperatorMatches extends OQueryOperatorEqualityNotNulls {
public OQueryOperatorMatches() {
super("MATCHES", 5, false);
}
@Override
protected boolean evaluateExpression(final OIdentifiable iRecord, final OSQLFilterCondition iCondition, final Object iLeft,
final Object iRight, OCommandContext iContext) {
return this.matches(iLeft.toString(), (String) iRight, iContext);
}
@Override
public OIndexReuseType getIndexReuseType(final Object iLeft, final Object iRight) {
return OIndexReuseType.NO_INDEX;
}
@Override
public ORID getBeginRidRange(final Object iLeft, final Object iRight) {
return null;
}
@Override
public ORID getEndRidRange(final Object iLeft, final Object iRight) {
return null;
}
private boolean matches(final String iValue, final String iRegex, final OCommandContext iContext) {
final String key = "MATCHES_" + iRegex.hashCode();
Pattern p = (Pattern) iContext.getVariable(key);
if (p == null) {
p = Pattern.compile(iRegex);
iContext.setVariable(key, p);
}
return p.matcher(iValue).matches();
}
}